Please help! My character is infinately jumping.

So i followed this tutorial:

and i did everything he said however my character can infinatly jump as much as you want....

using UnityEngine;
using UnityEngine.Events;

public class CharacterController2D : MonoBehaviour
{
[SerializeField] private float m_JumpForce = 10000000000000000f; // Amount of force added when the player jumps.
[Range(0, 1)] [SerializeField] private float m_CrouchSpeed = .36f; // Amount of maxSpeed applied to crouching movement. 1 = 100%
[Range(0, .3f)] [SerializeField] private float m_MovementSmoothing = .05f; // How much to smooth out the movement
[SerializeField] private bool m_AirControl = false; // Whether or not a player can steer while jumping;
[SerializeField] private LayerMask m_WhatIsGround; // A mask determining what is ground to the character
[SerializeField] private Transform m_GroundCheck; // A position marking where to check if the player is grounded.
[SerializeField] private Transform m_CeilingCheck; // A position marking where to check for ceilings
[SerializeField] private Collider2D m_CrouchDisableCollider; // A collider that will be disabled when crouching

const float k_GroundedRadius = .2f; // Radius of the overlap circle to determine if grounded
private bool m_Grounded; // Whether or not the player is grounded.
const float k_CeilingRadius = .2f; // Radius of the overlap circle to determine if the player can stand up
private Rigidbody2D m_Rigidbody2D;
private bool m_FacingRight = true; // For determining which way the player is currently facing.
private Vector3 m_Velocity = Vector3.zero;

[Header("Events")]
[Space]

public UnityEvent OnLandEvent;

[System.Serializable]
public class BoolEvent : UnityEvent<bool> { }

public BoolEvent OnCrouchEvent;
private bool m_wasCrouching = false;

private void Awake()
{
m_Rigidbody2D = GetComponent<Rigidbody2D>();

if (OnLandEvent == null)
OnLandEvent = new UnityEvent();

if (OnCrouchEvent == null)
OnCrouchEvent = new BoolEvent();
}

private void FixedUpdate()
{
bool wasGrounded = m_Grounded;
m_Grounded = false;

// The player is grounded if a circlecast to the groundcheck position hits anything designated as ground
// This can be done using layers instead but Sample Assets will not overwrite your project settings.
Collider2D[] colliders = Physics2D.OverlapCircleAll(m_GroundCheck.position, k_GroundedRadius, m_WhatIsGround);
for (int i = 0; i < colliders.Length; i++)
{
if (colliders.gameObject != gameObject)
{
m_Grounded = true;
if (!wasGrounded)
OnLandEvent.Invoke();
}
}
}


public void Move(float move, bool crouch, bool jump)
{
// If crouching, check to see if the character can stand up
if (!crouch)
{
// If the character has a ceiling preventing them from standing up, keep them crouching
if (Physics2D.OverlapCircle(m_CeilingCheck.position, k_CeilingRadius, m_WhatIsGround))
{
crouch = true;
}
}

//only control the player if grounded or airControl is turned on
if (m_Grounded || m_AirControl)
{

// If crouching
if (crouch)
{
if (!m_wasCrouching)
{
m_wasCrouching = true;
OnCrouchEvent.Invoke(true);
}

// Reduce the speed by the crouchSpeed multiplier
move *= m_CrouchSpeed;

// Disable one of the colliders when crouching
if (m_CrouchDisableCollider != null)
m_CrouchDisableCollider.enabled = false;
} else
{
// Enable the collider when not crouching
if (m_CrouchDisableCollider != null)
m_CrouchDisableCollider.enabled = true;

if (m_wasCrouching)
{
m_wasCrouching = false;
OnCrouchEvent.Invoke(false);
}
}

// Move the character by finding the target velocity
Vector3 targetVelocity = new Vector2(move * 10f, m_Rigidbody2D.velocity.y);
// And then smoothing it out and applying it to the character
m_Rigidbody2D.velocity = Vector3.SmoothDamp(m_Rigidbody2D.velocity, targetVelocity, ref m_Velocity, m_MovementSmoothing);

// If the input is moving the player right and the player is facing left...
if (move > 0 && !m_FacingRight)
{
// ... flip the player.
Flip();
}
// Otherwise if the input is moving the player left and the player is facing right...
else if (move < 0 && m_FacingRight)
{
// ... flip the player.
Flip();
}
}
// If the player should jump...
if (m_Grounded && jump)
{
// Add a vertical force to the player.
m_Grounded = false;
m_Rigidbody2D.AddForce(new Vector2(0f, m_JumpForce));

}
}


private void Flip()
{
// Switch the way the player is labelled as facing.
m_FacingRight = !m_FacingRight;

// Multiply the player's x local scale by -1.
Vector3 theScale = transform.localScale;
theScale.x *= -1;
transform.localScale = theScale;
}
}



===This is the character controller==
using TMPro;
using UnityEngine;

public class playermovement : MonoBehaviour
{

public CharacterController2D controller;
public Animator animator;
private bool isGrounded;
public float time;
public float runSpeed = 40f;
float horizontalmove = 0f;
bool jump = false;



// Update is called once per frame



void Update()
{

horizontalmove = Input.GetAxisRaw("Horizontal") * runSpeed;

animator.SetFloat("Speed", Mathf.Abs(horizontalmove));

if (Input.GetButtonDown("jump"))

{

jump = true;
animator.SetBool("IsJumping", true);



}
}

public void Onlanding()
{

animator.SetBool("IsJumping", false);

}






void FixedUpdate()

{



// move our character ()
controller.Move(horizontalmove * Time.fixedDeltaTime, false, jump);

jump = false;
}
}

===This is my player movement===


if someone could show me where im going wrong it would be greatly appretiated

 

switch this code

Code (CSharp):

1. if (Input.GetButtonDown("jump") && jump == false)
2.  
3. {
4.  
5. jump = true;
6. animator.SetBool("IsJumping", true);
7.  
8.  
9.  
10. }
11. }
12.  
13. public void Onlanding()
14. {
15. jump = false;
16. animator.SetBool("IsJumping", false);
17.  
18. }

 

Thanks so much man. Worked instantly.